Effect of geminivirus infection and Bemisia infestation on accumulation of pathogenesis-related proteins in tomato

Archives of Insect Biochemistry and Physiology
C L McKenzieRichard T Mayer

Abstract

The whitefly, Bemisia tabaci biotype B, has been shown to cause pathogenesis-related (PR) proteins to accumulate in plants as a result of direct feeding, but their specific role in plant defensive systems is unclear. Our objective was to compare accumulation of tomato PR proteins (beta-1,3-glucanase, chitinase, peroxidase, P2 and P4) in response to whitefly, with or without tomato mottle virus (ToMoV) infection. Tomato PR protein response was measured over time in plants divided into three treatments: uninfected controls (with or without whiteflies) and plants infested with viruliferous (ToMoV) whiteflies. Five- to six-leaf plants were infested with approximately 5 adult whitefly per leaf. Plants were sampled prior to whitefly infestation and at 14, 28, 42, and 56 days. By 56 days, plants infested with viruliferous whiteflies had significantly more eggs (2.5-fold) and nymphs (4.5-fold) than plants with nonviruliferous whiteflies. A significant increase in the enzymatic activity of all measured PR proteins, as compared to control plants, was only seen in viruliferous whitefly-infested plants. No significant difference was observed in enzyme activities between the uninfected control plants either with or without whiteflies. The g...Continue Reading

References

Oct 1, 1994·Journal of Chemical Ecology·M J StoutS S Duffey
Mar 1, 1985·Plant Molecular Biology·L C van Loon
Dec 1, 1997·Oecologia·Michael J StoutSean S Duffey
Dec 1, 1997·Plant Disease·Jane E Polston, Pamela K Anderson

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Citations

Mar 25, 2006·Proceedings. Biological Sciences·Nigel R FranksWilliam S Symes
Jan 1, 2004·Plant Physiology·Keyan Zhu-SalzmanHisashi Koiwa
Sep 20, 2007·Annual Review of Entomology·Moshe Inbar, Dan Gerling
Nov 15, 2002·Archives of Insect Biochemistry and Physiology·Richard T MayerHamed Doostdar
Nov 1, 2002·The New Phytologist·John A Gatehouse

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